Entanglement production in bosonic systems: Linear and logarithmic growth
Entanglement production in bosonic systems: Linear and logarithmic growth
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玻色子系统中的纠缠产生:线性和对数增长
DOI:
10.1103/physreva.97.032321
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发表时间:
2018
影响因子:
2.9
通讯作者:
Rigol, Marcos
中科院分区:
文献类型:
--
作者:
Hackl, Lucas;Bianchi, Eugenio;Modak, Ranjan;Rigol, Marcos
We study the time evolution of the entanglement entropy in bosonic systems with time-independent, or time-periodic, Hamiltonians. In the first part, we focus on quadratic Hamiltonians and Gaussian initial states. We show that all quadratic Hamiltonians can be decomposed into three parts: (a) unstable, (b) stable, and (c) metastable. If present, each part contributes in a characteristic way to the time dependence of the entanglement entropy: (a) linear production, (b) bounded oscillations, and (c) logarithmic production. In the second part, we use numerical calculations to go beyond Gaussian states and quadratic Hamiltonians. We provide numerical evidence for the conjecture that entanglement production through quadratic Hamiltonians has the same asymptotic behavior for non-Gaussian initial states as for Gaussian ones. Moreover, even for nonquadratic Hamiltonians, we find a similar behavior at intermediate times. Our results are of relevance to understanding entanglement production for quantum fields in dynamical backgrounds and ultracold atoms in optical lattices.
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DOI:
--
发表时间:
2014
期刊:
Physical review. E, Statistical, nonlinear, and soft matter physics
影响因子:
--
作者:
S. Khlebnikov;M. Kruczenski
通讯作者:
M. Kruczenski
影响因子:
5
作者:
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T. Kunihiro;B. Muller;A. Ohnishi;A. Schafer;T. T. Takahashi-T.;A. Yamamoto
影响因子:
2.9
作者:
Fedichev, PO;Fischer, UR
通讯作者:
Fischer, UR
影响因子:
5.4
作者:
Bianchi, Eugenio;De Lorenzo, Tommaso;Smerlak, Matteo
通讯作者:
Smerlak, Matteo
DOI:
--
发表时间:
1999
期刊:
影响因子:
--
作者:
Claus Kiefer;D. Polarski;A. Starobinsky
通讯作者:
A. Starobinsky